{
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\begin{tabular}{l*{4}{c}}
\hline\hline
                    &\multicolumn{1}{c}{(1)}&\multicolumn{1}{c}{(2)}&\multicolumn{1}{c}{(3)}&\multicolumn{1}{c}{(4)}\\
                    &\multicolumn{1}{c}{Capital per unit of output}&\multicolumn{1}{c}{log (Capital per unit of output)}&\multicolumn{1}{c}{Investment per unit of output}&\multicolumn{1}{c}{log (Investment per unit of output)}\\
\hline
log(labor)          &       737.1         &        0.80\sym{**} &        75.8         &        0.11         \\
                    &     (601.0)         &      (0.39)         &      (79.2)         &      (0.44)         \\
\hline
Adjusted \(R^{2}\)  &       0.281         &       0.383         &       0.334         &       0.311         \\
Winsor              &         Yes         &          No         &         Yes         &          No         \\
Observations        &          54         &          54         &          54         &          53         \\
\hline              &                     &                     &                     &                     \\
State x Rural FE    &         Yes         &         Yes         &         Yes         &         Yes         \\
SE:                 &      Robust         &      Robust         &      Robust         &      Robust         \\
Sample              &         ASI         &         ASI         &         ASI         &         ASI         \\
\hline\hline
\multicolumn{5}{l}{\footnotesize Standard errors in parentheses}\\
\multicolumn{5}{l}{\footnotesize \sym{*} \(p<0.10\), \sym{**} \(p<0.05\), \sym{***} \(p<0.01\)}\\
\end{tabular}
}
